/Engine/Source/Editor/KismetWidgets/Public/SPinTypeSelector.h
Gets the allowable object types for an tree item, used for building the sub-menu
[TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) > GetAllowedObjectTypes ( FPinTypeTreeItem InItem, bool bForSecondaryType )